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sweet [91]
3 years ago
5

What is the area of this circle given a radius of 2 in?

Mathematics
1 answer:
Serjik [45]3 years ago
4 0
2
The answer is 12.57 in
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Please explain as well 3x+5y=21 4x-2y=-244x−2y=−24
hodyreva [135]

Step-by-step explanation:

3x + 5y = 21 * (-4) •••••• -12x -20y = -84 (a)

4x - 2y = -24 * (3) •••••• 12x -6y = -72 (b)

(a) + (b)

-26y = -156

y = 6

3x + 5 * 6 = 21

3x = 21 - 30

3x = -9

x = -3

3 0
3 years ago
How old were the twins who played in the recital?
inna [77]
To find out how old the twins were that were in the recital you need to be able to interpret a stem and leaf plot.  The number of the left gets placed with each number on the right to create a number in the data set.  See the key for an example.  This means there were 2 people that were 5 years old making them the twins!
3 0
3 years ago
You order two tacos and a salad. The salad costs $2.50. You pay 8% sales tax and leave a $3 tip. You pay a total of $13.80. How
denis23 [38]
Let T = cost of a taco
Let S = cost of a salad

(2 tacos + 1 salad) + (8 % of 2 tacos and 1 salad) + 3 = 13.80

2T + S + .08(2T + S) + 3 = 13.80
2T + 2.5 + .08(2T + 2.5) + 3 = 13.80
2T + 2.5 + .16T + .20 + 3 = 13.80
2.16T + 5.7 = 13.80
2.16T = 8.10
T = 8.10/2.16 = $3.75

Check: 2T + S + .08(2T + S) + 3 = 13.80
2(3.75) + 2.50 + .08(2(3.75)+2.5) + 3 = 13.80
7.5 + 2.5 + .08(10) + 3 = 13.8
13.80 = 13.80
Answer checks as correct
8 0
3 years ago
What is the answer to 3/7+2/7
Ad libitum [116K]
5/7 is your answers
7 0
3 years ago
Simplify the expression:<br> -5(2x - 5)
OverLord2011 [107]

Answer:

<u>-10x+25</u>

<em>Step-by-step explanation:</em>

−5(2x−5)

=(−5)(2x+−5)

=(−5)(2x)+(−5)(−5)

<u>=−10x+25</u>

6 0
3 years ago
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